CN215727113U

CN215727113U - Ash sampling device

Info

Publication number: CN215727113U
Application number: CN202122015825.9U
Authority: CN
Inventors: 刘闯; 陈锋; 杨智尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-01
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to the field of thermal power, in particular to a dust sampling device which comprises a dust conveying main pipe and a dust inlet pipe connected with the dust conveying main pipe, wherein a sampling control valve is arranged on the pipe body of the dust inlet pipe, a dust storage box is arranged at the outlet of the dust inlet pipe, and an end cover is arranged at the outlet of the box body of the dust storage box.

Description

Ash sampling device

Technical Field

The utility model relates to the field of thermal power, in particular to an ash sampling device.

Background

In a thermal power plant, the daily detection of the carbon content of the fly ash has important significance for adjusting the combustion of a boiler, reducing the plant power consumption rate and improving the boiler efficiency. The fly ash sampling modes commonly used in the current thermal power plant are generally divided into two types: constant-speed sampling and fixed sampling by a grid method.

The constant-speed sampling method is a standard fly ash sampling method for ensuring fly ash to be representative, is generally used at an outlet horizontal flue of an air preheater, and performs point-by-point sampling with equal time at each sampling point of the horizontal flue according to factors such as the sectional area of the flue, the test duration, the number of times of cyclic sampling and the like by adopting an equal section division principle. The method has high sampling accuracy and is generally used for performance tests. However, the method has the disadvantages of long sampling time, large workload of personnel, less sampling amount and the like, and cannot meet the purpose of sampling fly ash in daily operation of a thermal power plant to realize the estimation of the operation state of the boiler. Therefore, most power plants adopt fixed fly ash sampling devices to realize continuous sampling in operation.

The fixed fly ash sampling device mainly adopts two modes of cyclone separation and impact at present. The cyclone separation type fly ash sampling is that a cyclone separation device is arranged on a flue at the tail part of a boiler, the fly ash is separated from flue gas by using the negative pressure of the flue to provide power, and the fly ash sampling is unstable under the influence of the negative pressure of the flue, a sampling point and the separation effect of the separation device. The impact type sampling device is arranged below a horizontal flue at the outlet of the air preheater, has a simpler structure, can only capture larger fly ash particles, and has smaller sampling amount and poorer representativeness.

In practical production, most of thermal power plants adopt impact samplers to sample fly ash, the sampling efficiency is low, the accuracy is poor, and no effective guidance can be provided for operation adjustment in the production process, so that a fly ash sampling device with simple structure, low manufacturing cost and good sampling effect needs to be provided, and the fly ash sampling device is convenient to popularize in production

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an ash sampling device.

In order to solve the technical problem, the technical scheme provided by the utility model is that the ash sample taking device comprises: the utility model provides a get grey appearance device, includes defeated grey female pipe and advances grey pipe with defeated grey female union coupling, it is equipped with the sample control valve to advance grey pipe body, it installs and is equipped with the ash storage box to advance grey pipe export, ash storage box export is equipped with the end cover.

As an improvement, one end of the ash storage box, which is far away from the sampling control valve, is connected with the end cover through threads.

As an improvement, the included angle between the ash inlet pipe and the ash conveying main pipe is in welding communication with an angle of 30-45 degrees.

As an improvement, the sampling control valve adopts a butterfly valve.

As an improvement, the ash inlet pipe and the ash storage box are both of cylindrical structures.

Compared with the prior art, the utility model has the advantages that: simple structure, low in manufacturing cost, the sampling efficiency is high, can effectively reduce the dust and leak and cause environmental pollution, also protects staff's personal safety simultaneously.

Drawings

FIG. 1 is a schematic view of the construction of a dust sampling apparatus;

fig. 2 is a schematic view of the end cap construction.

As shown in the figure: 1. ash inlet pipe, 2, sampling control valve, 201, handle, 3, ash storage box, 4, end cover, 401, screw thread, 5, ash conveying main pipe.

Detailed Description

An ash sampling device according to the present invention will be described in further detail with reference to the accompanying drawings.

With reference to the attached drawings 1-2, the ash sampling device comprises an ash conveying main pipe 5 and an ash inlet pipe 1 connected with the ash conveying main pipe 5, wherein a sampling control valve 2 is arranged on the body of the ash inlet pipe 1, an ash storage box 3 is arranged at the outlet of the ash inlet pipe 1, and an end cover 4 is arranged at the outlet of the ash storage box 3.

As a preferred embodiment of the embodiment, one end of the ash storage tank 3 far away from the sampling control valve is connected with the end cover 4 through a thread 401.

As the preferred embodiment of the embodiment, the included angle between the ash inlet pipe 1 and the ash conveying main pipe 5 is in welding communication with an angle of 30-60 degrees.

In the preferred embodiment of the present embodiment, the sampling control valve 2 is a butterfly valve.

As a preferred embodiment of the embodiment, the ash inlet pipe 1 and the ash storage box 3 are both provided with cylindrical structures.

When the ash conveying device is implemented specifically, the ash conveying device is welded on the ash conveying main pipe 5, when an ash conveying program starts to run, the end cover 4 is kept to be screwed, the handle 201 is broken off, the sampling control valve 2 is opened, positive-pressure dense-phase fly ash is conveyed by the ash conveying main pipe 5, the ash inlet pipe 1 and the ash conveying main pipe 5 form an angle of 30-45 degrees, ash can conveniently enter the ash storage box 3, the sampling control valve 2 is closed at a small interval, the end cover 4 is unscrewed, fly ash in the ash storage box 3 is collected, and a wrench is used for knocking the ash storage box 3 to completely collect the fly ash in the ash storage box 3.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a get grey appearance device which characterized in that: the ash storage device comprises an ash conveying main pipe (5) and an ash inlet pipe (1) connected with the ash conveying main pipe (5), wherein a sampling control valve (2) is arranged on the body of the ash inlet pipe (1), an ash storage box (3) is arranged at the outlet of the ash inlet pipe (1), and an end cover (4) is arranged at the outlet of the ash storage box (3).

2. An ash sampling device according to claim 1, wherein: one end of the ash storage box (3) far away from the sampling control valve is connected with the end cover (4) through a thread (401).

3. An ash sampling device according to claim 1, wherein: the ash inlet pipe (1) and the ash conveying main pipe (5) form an included angle of 30-60 degrees and are welded and communicated.

4. An ash sampling device according to claim 1, wherein: the sampling control valve (2) adopts a butterfly valve.

5. An ash sampling device according to claim 1, wherein: the ash inlet pipe (1) and the ash storage box (3) are both of cylindrical structures.